Direct flights to Seoul | Cheapflights

Find flight deals to Seoul

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights to Seoul
Explore the most affordable flight options available to Seoul. Find the lowest fares based on data from user searches, with prices last updated on 18 September 2026.

Wed 30/900:45 -

Nonstop5h 40m

Fri 9/1019:55 -

Nonstop5h 50m

Deal found 15/9฿7,492

Wed 23/901:10 -

Nonstop5h 45m

Mon 28/918:00 -

Nonstop6h 05m

Deal found 17/9฿7,526

Wed 30/902:25 -

Nonstop5h 35m

Sat 10/1020:05 -

Nonstop6h 05m

Deal found 14/9฿7,559

Thu 1/1002:25 -

Nonstop5h 35m

Wed 7/1020:05 -

Nonstop6h 05m

Deal found 18/9฿7,625

Wed 30/900:05 -

Nonstop5h 35m

Wed 7/1020:05 -

Nonstop6h 05m

Deal found 18/9฿7,659

Wed 30/900:05 -

Nonstop5h 35m

Mon 5/1018:00 -

Nonstop6h 05m

Deal found 17/9฿7,692

Fri 2/1002:25 -

Nonstop5h 35m

Tue 6/1020:05 -

Nonstop6h 05m

Deal found 15/9฿7,725

Thu 1/1002:25 -

Nonstop5h 35m

Mon 5/1018:00 -

Nonstop6h 05m

Deal found 18/9฿7,759

Tue 22/900:05 -

Nonstop5h 35m

Mon 28/918:00 -

Nonstop6h 05m

Deal found 16/9฿7,792

Tue 22/900:05 -

Nonstop5h 35m

Sun 27/918:00 -

Nonstop6h 05m

Deal found 16/9฿7,825

Fri 2/1002:25 -

Nonstop5h 35m

Thu 15/1018:00 -

Nonstop6h 05m

Deal found 16/9฿7,859

Thu 1/1002:45 -

Nonstop5h 50m

Mon 5/1012:05 -

Nonstop5h 45m

Deal found 18/9฿8,891

Best time to book a flight to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul with our price prediction graph.

TH1-SEL

BKK-ICN

DMK-ICN

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Fly from

Route

Depart

Return

Price

Cheapest return flight

BangkokIncheon

BKK Bangkok Suvarnabhumi - ICN Incheon Intl

BKKICN

Bangkok Suvarnabhumi

Mon 16/11

22:25-06:20

Nonstop5h 55m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿4,595

BangkokIncheon

DMK Bangkok Don Mueang Intl - ICN Incheon Intl

DMKICN

Bangkok Don Mueang Intl

Mon 5/10

02:45-10:35

Nonstop5h 50m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿4,629

BangkokIncheon

DMK Bangkok Don Mueang Intl - ICN Incheon Intl

DMKICN

Bangkok Don Mueang Intl

Fri 2/10

02:45-10:35

Nonstop5h 50m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿4,662

BangkokIncheon

BKK Bangkok Suvarnabhumi - ICN Incheon Intl

BKKICN

Bangkok Suvarnabhumi

Mon 9/11

22:25-06:20

Nonstop5h 55m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿4,695

BangkokIncheon

DMK Bangkok Don Mueang Intl - ICN Incheon Intl

DMKICN

Bangkok Don Mueang Intl

Thu 1/10

02:45-10:35

Nonstop5h 50m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿4,828

BangkokIncheon

BKK Bangkok Suvarnabhumi - ICN Incheon Intl

BKKICN

Bangkok Suvarnabhumi

Tue 3/11

01:30-09:00

Nonstop5h 30m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿5,661

BangkokIncheon

BKK Bangkok Suvarnabhumi - ICN Incheon Intl

BKKICN

Bangkok Suvarnabhumi

Mon 9/11

01:30-09:00

Nonstop5h 30m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿5,661

BangkokIncheon

BKK Bangkok Suvarnabhumi - ICN Incheon Intl

BKKICN

Bangkok Suvarnabhumi

Sat 3/10

00:05-07:40

Nonstop5h 35m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿5,761

BangkokIncheon

BKK Bangkok Suvarnabhumi - ICN Incheon Intl

BKKICN

Bangkok Suvarnabhumi

Mon 12/10

02:25-10:00

Nonstop5h 35m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿5,961

BangkokIncheon

BKK Bangkok Suvarnabhumi - ICN Incheon Intl

BKKICN

Bangkok Suvarnabhumi

Wed 4/11

01:30-09:00

Nonstop5h 30m

Incheon Intl

Wed 31/12

00:00-22:00

Nonstop0h 00m

฿5,961

Flights are sorted by cheapest return flights first.

Deals found on 18/9

Showing 1-10 of 36 resultsSorted by cheapest first

1

2

3

4

Reviews of airlines flying non-stop to Seoul

Check out reviews from past customers who have flown Korean Air,AIR PREMIA, andThai Airways to South Korea to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

8.4

Very Good

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

8.4

Very Good

8.4

Very Good

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

AIR PREMIA

8.1

Very Good

8.4

Very Good

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

7.9

Good

8.4

Very Good

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Thai Vietjet Air

6.7

Okay

8.4

Very Good

Reviews

1 / 20

10.0

Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

FAQ about direct flights to Seoul

How much are direct flights to Seoul?
On average, a one-way direct flight to Seoul will cost users approximately ฿21,542. If you're looking for a direct return flight to Seoul, you can expect to pay around ฿27,193.
Which airlines fly direct to Seoul?
At the moment, Thai AirAsia X, Thai Vietjet Air, Korean Air, Thai Airways, AIR PREMIA, Asiana Airlines, Trinity Airways, Eastar Jet, Thai Lion Air, Thai AirAsia offer direct flights to Seoul. Thai AirAsia X is currently the most popular airline that flies direct to Seoul.
What is the best time of year to fly direct to Seoul?
If you're seeking the lowest price on a direct flight to Seoul, February is worth consideration, as prices are usually at their lowest, on average. January may be most appealing to users looking for the quietest time to visit Seoul, when demand is typically at its lowest.
What is the most popular direct flight origin to Seoul?
Currently, the most popular direct flight origin to Seoul is Bangkok Suvarnabhumi Airport. A return direct flight from Bangkok Suvarnabhumi Airport to Seoul typically costs around ฿27,176.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Popular South Korea destinations

Popular Asia destinations

Popular Seoul routes

Airlines

South Korea origins

Direct flights to South Korea

Direct flights to Busan

Direct flights to Daegu

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book With Flexibility

Our users can plan ahead with confidence and find flights with no change fees.

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.